There is provided a marine motor (2) having an internal combustion engine (100) having an engine block (110) with at least one cylinder, an air intake (120), an exhaust conduit (130) configured to direct a flow of exhaust gas from the at least one cylinder, and an exhaust gas recirculation system (140) configured to recirculate a portion of the flow of exhaust gas from the exhaust conduit to the air intake. The exhaust gas recirculation system (140) includes a first exhaust gas recirculation circuit (141) with at least one first EGR cooler (151) having a first overall conductance, and includes a second exhaust gas recirculation circuit (145) with at least one second EGR cooler (152) having a second overall conductance which is greater than the first overall conductance. The exhaust gas recirculation system (140) also includes flow control means (143, 147) configured to selectively vary the relative proportions of first and second flows of recirculated exhaust gas through the first and second exhaust gas recirculation circuits to allow the amount of exhaust gas cooling to be varied.
提供了一种具有内燃机(100)的船用发动机(2),所述内燃机具有带至少一个气缸的发动机体(110)、进气口(120)、配置成引导来自所述至少一个气缸的废气流的排气导管(130),以及配置成将所述废气流的一部分从所述排气导管再循环到所述进气口的废气再循环系统(140)。所述废气再循环系统(140)包括具有至少一个第一EGR冷却器(151)的第一废气再循环回路(141),所述至少一个第一EGR冷却器具有第一总传导率,并且包括具有具有至少一个第二EGR冷却器(152)的第二排气再循环回路(145),所述至少一个第二EGR冷却器具有大于所述第一总传导率的第二总传导率。所述废气再循环系统(140)还包括流控制装置(143、147),所述流控制装置配置成选择性地改变穿过所述第一废气再循环回路和所述第二废气再循环回路的第一再循环废气流和第二再循环废气流的相对比例,以允许改变废气冷却量。
MARINE MOTOR WITH A DUAL-FLOW EXHAUST GAS RECIRCULATION SYSTEM
具有双流废气再循环系统的船用马达
04.01.2022
Patent
Elektronische Ressource
Chinesisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung |
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